diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index 71cb1b02c29..f2beb688dff 100644
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -138,7 +138,7 @@ class quiz_overview_report extends quiz_attempts_report {
             // Construct the SQL.
             list($fields, $from, $where, $params) = $table->base_sql($allowedjoins);
 
-            $table->set_count_sql("SELECT COUNT(1) FROM $from WHERE $where", $params);
+            $table->set_count_sql("SELECT COUNT(1) FROM (SELECT $fields FROM $from WHERE $where) temp", $params);
 
             // Test to see if there are any regraded attempts to be listed.
             $fields .= ", COALESCE((
diff --git a/mod/quiz/report/responses/report.php b/mod/quiz/report/responses/report.php
index debfa87fa4d..2d41ef37bb0 100644
--- a/mod/quiz/report/responses/report.php
+++ b/mod/quiz/report/responses/report.php
@@ -151,7 +151,7 @@ class quiz_responses_report extends quiz_attempts_report {
 
             list($fields, $from, $where, $params) = $table->base_sql($allowedjoins);
 
-            $table->set_count_sql("SELECT COUNT(1) FROM $from WHERE $where", $params);
+            $table->set_count_sql("SELECT COUNT(1) FROM (SELECT $fields FROM $from WHERE $where) temp", $params);
 
             $table->set_sql($fields, $from, $where, $params);